Liquid pressure marking device



Nav. 17, 1942. D. H. scHwEYER 2,302,062

LIQUID PRESSURE MARKING DEVICE Filed Sep. 26, 1941 INVENTOR.

A/ f l' l l ORNEY.

Patented Nov. I7, 1942 UNITED STATES PATENT lOFFICE p 2,302,062 `LIQUIDPn'EssUgaE Mannini; DEVICE Daniel H. SclIweyeI', Easton, Pa. Applicationseptember zs,1941,ser1a1No. 412,523

3 Claims.

a holding reservoir secured at one end and a com` pression reservoirsecured at the other end connected to a marking nozzle; the completedevice forming a handle for guiding the marking point and having meansfor applying pressure to the marking nozzle as the device is used.Otherobjects of the invention-reside in the details of con` struction asmore particularly described in the following specification and shown inthe accompanying drawing, in which:

Fig. 1 is a sectional elevation of one form of the marking device havingthe compression cylinder located-at right angles to the longitudinalaxis;

Fig. 2 is a front. elevation of the device shown in ,Fig. l;

Fig. 3 is a sectional elevation of a vmodified form of the device inwhich the compression cylinder is operated from the top end;

Fig. 4 is a front elevation of the device shown in Fis. 3;

Fig. 5 is a sectional elevation of another vmodification of the devicein which the compression cylinder is operated by a knurled head, and

Fig. 6 is a front elevation of a portion of Fig. 5.

The marking device of the present invention isintended for applying amarking fluid throughv a nozzle which is air drying and which has to beprotected from the atmosphere when the device is in use. It comprises ayholding reservoir at the top where the liquid is stored and a pressurereservoir at the bottom connected with the valve of the'markin'g nozzleso that as the valve is re-.

leased the fluid is forced from the pressure chamber by the operation ofthe compressor `as required by the operator.

The structure comprises a central body supporting the compressioncylinder and to this body the holding reservoir is connected by a ilaredconnection, also the compression reservoir is connected by a flaredconnection to the opposite end of the body. This makes an axiallyaligned cyi lindrical body forming the handle of the device and fromwhichthereservoirsare readily disconvice.

nected -for cleaning and other purposes. In one form ofthe device thecompression cylinder is located in the body at right angles to thelongitudinal axis of ythe device and the plunger for operating thiscylinder projects from the side of the body and stands clearof thereservoirs so that it doesnot interfere with the removal of thereservoirs. The plungeriof this'cylinder is in a convenient location foroperation by the finger of thev hand which manipulates the device.

The compressor is provided wtih a check valve so that pressure may beaccumulated'in the delivery reservoir, lor it may be operated aspressure is required in the manipulation of the devided with a capat I2and connected by the flancl 22 and vthe are nut 23 with the body 2|. I3is the compression or delivery reservoir which is tapered at I4 andterminates in the orifice I5 provided `with the conical ended cap I6having a central orifice closed by the ball valve I 1 which is normallyseated by the spring and held in place by the washer I3, which isprovided with apertures I9, to provide for the flow of the fluid fromthe chamber c through the nozzle I1 when pressure is applied to thenozzle. The reservoir I3 is ilared at 24 and connected by the flare nut25' to the body 2|.

A transverse cylinder 21 is provided in the body 2I- and has the piston28 connecting by stem 3l with th buttonl 34 and normally held in theoutward position by'lspring 33. A stufilng box is il provided at 32 forthe plunger 3|.

In operation the marking iluid stored at a ln the holding reservoir II,through the port l,26, enters the cylinder 21 and by the operation of.is forced through the spring seated ball valve 29 and prt 30 into thepressure reservoiry c. AsV the `operator` manipulates the device hemaintains pressure on thel button 34 to supply the pressure required fordischarging the fluid through the nozzle I1.

The construction inFigs. l and 2 compression cylinder located in thebodyat right angles to the reservoirs and free from the reservoirs. In Fig.3, the compresssion cylindeI- is located in the body and in axialalignment with the reservoirs and is operated by a projecting stem atthe top of thedevice.

In this construction the plunger Tf'ln thecompression cylinder 21connects by a screw stem 35 with the socket 38 which terminates in stem39 by which the'screw is operated to advance the piston 23. The stem 35is splined at shows the.

36 in the cap 31 to secure a non-turning engagement and the socket 38 isprovided with a flange at 40 engaging the fixed collar 4I secured intube II. In operation the marking fluid is stored at a and through theports 42 passes into chamber b. From this chamber, through ports 26, itconnects withthe cylinder 21 and is forced by piston 28a through thespring seated ball valve 29 and orifice 30 into the delivery chamber cto feed the marking nozzle at I6. Th',l required pressure is obtained byrotating stem 39 to feed the piston 28a forward.

In the construction in Fig. a single tube Il is used, provided with afixed collar 5| supporting the compression cylinder 52, which, asindicated, may be square in section to receive the square piston 55connecting to the stem 56 which is threaded in collar 51 in tube 58which is rigidly secured to the top ilange 63. An exterior collar 6| isprovided on tube Il and is engaged by the screw collar 62 to hold a topflange 63 in place and permit it to turn freely. In operation thefriction cover 65 is removed and the liquid is supplied to chamber a andthrough ports 59 to chamber b and from cham ber b through ports 54 whenthe plunger 55 is raised to the compression cylinder 52 and through thespring seated valve 53 to the delivery chamber C. The flange 63 isprovided with an extension 6l!` to which the tube E58 is secured.Pressure is applied to the marking fluid in chamber c by rotating flange63.

Having thus described my invention, I claim:

1. A pressure marking device for applying a liquid marking fluid,comprising a body with a cylindrical aperture therein, a holdingreservoir for holding the marking uid connected to one side of saidbody, a, pressure reservoir having a marking orice connected to theother side of said body and supplying the marking fluid to the markingorifice, a conduit connecting said holding reservoir to said cylindricalaperture, a second conduit connecting said cylindrical aperture to saidpressure reservoir, a piston for said cylinder for forcing the liquidfrom said holding reservoir into said pressure reservoir under pressureand means external tosaid body for operating said piston.

2. A pressure marking device for applying a liquid marking uid,comprising a body with a cylindrical aperture therein having a lbeveledsection at each end, a holding cylindrical reservoir for the markingfluid flared at the end and secured to the beveled end of said body, apressure reservoir having a marking orifice and flared at the end toengage the opposite beveled end of said body and detachably securedthereto, a conduit connecting said holding reservoir, with said cylinderand a second conduit with a check valve therein, connecting saidcylinder with said pressure reservoir, a piston in said cylinder forpumping the fluid from said holding reservoir to said pressure reservoirand means exterior to said body and clear of said reservoirs to operatesaid plunger.

3. A pressure marking device for applying a liquid marking fluidcomprising a body with a holding reservoir attached to one end and a.pressure reservoir with a marking nozzle attached to the other end, saidbody and said reservoirs forming a handle for the marking device, acylindrical aperture in said body transverse to the axis of saidreservoirs, conduits connecting said cylinder with said reservoirs, apiston in said cylinder for pumping the iiuid from said holdingreservoir to said pressure reservoir and a plunger exterior to said bodyfor operating said piston and located to be operated by thumb pressureof the hand manipulatingthe marker.

DANIEL H. SCHWEYER.

